Haigh Hall Golf Club
Country Park
Red Rock Lane
School Lane
Wigan
WN1 2PE
1st October 2014
Presented by
Alan Bithell - Rma Director
Mike Carter – Marangoni UK
Steve Breckons - Bandvulc
General Introduction
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The RMA was established in 1938 and remains an active member of BIPAVER
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The RMA is a nationally recognised body that represents the interests of the independent UK Retread industry
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Scope of RMA membership:
PROCESSING MEMBERS – Car/Van; Commercial Vehicle; Agricultural; Earthmover
SUPPLIER GROUP – Raw materials ; Equipment ;Casings; Tools ; Repair materials
LIAISON GROUP – Tyre Consultants ; New tyre manufacturers ; Trade associations
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We have a board of seven individuals representing a cross-section of membership
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RMA has representation with BSI - and is active within several other trade associations
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We have a very active City & Guilds program designed to encourage professionalism in our industry
What is a Retread ?
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A Retread is a generic term for the re-engineering of selective worn tyres
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It is process that involves extending the life of a ‘tyre casing’ by assessing its integrity throughout the entire process
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This may involve the use of non destructive equipment such as Shearography ; Ultrasonics ; Pressure Testing ; etc
There are three types:
Top – Capping
A process in which the worn tread rubber is renewed, by application of a
preformed and vulcanised tread
Recapping
A process in which the rubber is removed from the worn tread and over the
shoulder and new rubber is then applied
Remoulding
A process in which rubber is removed from the tread shoulder and sidewall, new
rubber is applied, extending from bead to bead
The Market Place (the facts)
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It is estimated that there are approx. 5 million EU Commercial Retreads
manufactured each yr.
The UK manufactures approx. I million commercial vehicle Retreads each yr.
NEW vs RETREAD Ratio: 1:1 - UK commercial vehicles are running on
Retreaded tyres (Estimated)
70% + of your groceries are delivered on Retreads
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The environmental saving are staggering - extending the life of a worn tyre
Average savings per truck tyre:
44 Kgs of rubber ; 68 litres of oil ; 182 Kg Co2
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Tyre manufactures produce tyres for multiple lives and all have a Retread
manufacturing facilities – Bridgestone – Michelin – Goodyear – Continental -
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Many commercial airlines operate using Retreaded tyres
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In Italy the government has specified that at least 20% of state owned
vehicles must drive on Retreads
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Retreads can sometimes even out perform new tyre!
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By Law Retreads are manufactured in accordance with ECE 108/109
This regulation ensure that the quality and performance is on par with the quality expected from a new tyre
They are tested to the same stringent performance criteria as new tyres.
Expelling the myths of Retreads ?
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Are Retreads safe - they blow out?
They can only be used at slow speeds?
Not good value – false economy ?
Responsible for all that motorway debris?
Not as good as a budget tyre?
‘Lets answer some of the above myths’
Maximise the mobility potential of worn tyres via PROFESSIONAL RETREADING
What to look for when choosing a quality Retread?
Tyre markings:
All Retreads should exhibit the ‘E mark’
E4
109 R - 002439
The above approval mark shows that the retreading production unit concerned has been Approved (in this case E4 – Netherlands)
under the approval number 109R 002439 thus meeting the requirements of this legal regulation
The approval number must be on the same side of the ‘E’ marking usually place above or below as illustrated .
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Check you have the correct construction
Check the service description is correct for the vehicle (load and speed capabilities)
Check with your supplier the regarding correct application and operating pressures
Check it has a brand name you trust
Ask your Retread supply if they are members of the
A sign of professional Retreading
Tyre Age / Ageing of tyres
Nothing stay the same for ever!!
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The Rma recognises that the integrity of the tyre casing prior to retreading is absolutely vital
The Age of a tyre is only one of many factors when considering a worn tyre for retreading
Retreader may imposed internal specifications that consider the age of a casing although this is not a requirement
of Reg.of ECE 108/109
A combination of skill, experience and complex non destructive equipment significantly reduces the risk of in
service anomalies such as premature tyre failure
The ‘Ageing of tyre casing’ is much more of a problem!
During the course of tyres life it may be subject an enormous amount of use and abuse
Rma members are encouraged to invest in non destructive equipment to check the casing integrity
Poor tyre/vehicle management can severely affect the casing integrity - rendering the casing scrap –
Best practice documents that emphasises good tyre management will maximise a customers investment
Poor tyre management can severely affect the casing integrity - rendering the casing scrap –
Best practice documents that emphasises good tyre management will maximise a customers investment
REMEMBER: It’s the air that carry the load
Avoid premature tyre failure by adopting ‘ Good Tyre Management’ programs
120%
COMMON PLACE
110%
AIR PRESSURE
100%
90%
80%
70%
120%
AIR PRESSURE
100%
MILEAGE
MILEAGE
100%
90%
AIR PRESSURE
80%
60%
MILEAGE
75%
50%
AIR PRESSURE
60%
40%
MILEAGE
35%
30%
20%
10%
0%
Even pressure distribution.
Maximum tyre mileage.
Optimum handling.
Optimum fuel
consumption
High stress in tyre
shoulder. Small contact
area in shoulder only.
Reduced mileage. Worse
fuel consumption.
Extreme flexing.
Extreme heat build up.
Extreme safety risk.
DANGEROUS
High wear in tread centre.
Reduced mileage. Reduced
comfort
Best Practice Guides
Confederation of Passenger Transport UK
The Retread Manufacturers Association welcomes the opportunity to assist in
improving professionalism in our industry
It is important to put in perspective ‘the facts’ so that customers can maximise
their mobility (tyre) investment
‘Best Practice Guides’ are considered to be important documents by our
association members
Thank You for Listening
Q&A